wind deflector

 ordered a set of black plastic wind deflector and they arrived today

62mm Throttle body and Mopar TPS replacement

Before removing old throttle body, tested voltages on connectors and ground impedance.

Throttle Position Sensor (TPS)
1) Turn ignition on. Check TPS output voltage at sensor wiring harness center terminal. At idle, output voltage should be greater than .2 volt.
2) Gradually open throttle plate. Output voltage should gradually increase as throttle plate is opened. At wide open throttle, output voltage must be less than 4.8 volts.

Ground impedance was less than 0.2 Ohm, 

input voltage 5.05V
@idle 0.829V
@WOT 2.9V

Disconnected battery negative, IAC and TPS connectors. Dismount old TB, IAC sensor. As read on forum, IAC body needs little (~1mm) shaving from one end to fit perfectly on new throttle body. 

 

Throughly cleaned mating parts and installed IAC body on T, TB on intake manifold. Vacuum plug remained there as is. Mine is 91 and MAP sensor is on firewall.

Mopar TPS is also need some touch, because sensor is not fully seated on throttle body.

Used 2 gaskets (IAC & TB) and supplied 4 bolts, old bolts are not fir there is no room for washer.

Checked voltage again, now:

input voltage 5.05V
@idle 0.817V
@WOT 3.865V

 

Resetted PCM and engine started.There are no hesitation, no idle hunting etc.

Parts arrived, 62mm TB & Mopar TPS

Due to leaky butterfly shaft and cheap TPS, decided to order 62mm throttle body and Mopar TPS. They are arrived.

Mopar Throttle Position Sensor 4761871, on itself 5234904

62mm throttle body, 1724 62mm Throttle Body for 1991-2003 Wrangler Cherokee 4.0L YJ TJ XJ ZJ WJ - High Flow Power Plus Series for Jeep 4.0L replace to bbk jeep 4.0 62mm throttle body

ordered from amazon,

Arrived with bolts, gaskets

Distributor replacement

Replaced distributor with late model one, it will be much easier to replace pickup ring in case of fault. 

at tdc, adjustment hole bit offside, rotor seems bit later from  #1 spark plug

will order spare camshaft position sensor and keep it near.

Plate - Mopar (56027023AB)

Genuine OEM Mopar Plate - 56027023AB

Parts arrived, distributor, belt & AT filter

Had an issue with camshaft sensor lately and replaced with old but running sensor. Replacement needs shaft removal etc, little time consuming. Did little research and found following from comancheclub.com

 it looks like you have an early 91-93 HO distributor - it's a poor design. ...A better solution is to junk the distributor and stick in a 94 and up distributor - it's PnP. Then if your sync sensor (pulse ring) goes out again, you can change it from the top w/o yanking the dizzy out.

and decided to order it. 

CARDONE 844694 (84-4694) Distributor

ordered also belt and AT filter as a spare.

 

 

AT filter Wix  58936 is arrived with a rubber pan gasket

a reference for installation

EFS 4x4 work light as reverse light

 after years of use my LED revers lights are almost gone south. Replaced with pair of EFS 4x4 Accessories's work lights.

EFS VIVIDMAX 4″ SQUARE WORK LIGHT | VMWL-424

95mm / 4″ SQUARE 24W WORK LIGHT 24W 4″ SQUARE 24W LED WORK LIGHT

old lights are removed and bracket installed

done, sun and a light

it is bright

directed downward

Distributor pickup coil - OBD error 54

Had an starting issue, cranking, have fuel but not start, specially just after turn off. Key trick and got code 54 - means the camshaft sensor's signal is missing.

Replaced sensor with one from old distributor. 

wire insulator is cracked, need a tape there

changing pickup coil of 91 HO distributor needs full disassembly of distributor, will change it with later model one. They have an identical connector and pinout.

Maintenance - serpentine belt and heater hose

 Replaced cracked serpentine belt and shortened heater hose.

 

 

Around end of  winter, heater hose was sprinkled and cut this area and connected back. It was bit tight/short, but works tiil now.

Better radiator

My CSF aluminum/plastic radiator have a small leak around 2 sides and ordered CSF All-Metal Radiator 2671. 

Specification are:
Radiator Material:    Copper/Brass
Radiator Style:    Crossflow
Transmission Cooler:    Yes
Inlet Location:    Upper passenger side
Outlet Location:    Lower driver side
Row Quantity:    3
Radiator Finish:    Black
Core Width (in.):    10.95 in.
Core Height (in.):    30.98 in.
Core Thickness (in.):    1.69 in.
Radiator Inlet Size:    1.250 in.
Radiator Outlet Size:    1.500 in.